package cn.wolfcode.service.impl;

import cn.wolfcode.domain.Department;
import cn.wolfcode.mapper.DepartmentMapper;
import cn.wolfcode.qo.PageResult;
import cn.wolfcode.qo.QueryObject;
import cn.wolfcode.service.IDepartmentService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Collections;
import java.util.List;

@Service
@Transactional
public class DepartmentServiceImpl implements IDepartmentService {

    @Autowired
    private DepartmentMapper departmentMapper;

    @Override
    public void delete(Long id) {
        departmentMapper.deleteByPrimaryKey(id);

    }

    @Override
    public void save(Department department) {
        departmentMapper.insert(department);

    }

    @Override
    public Department get(Long id) {
        return departmentMapper.selectByPrimaryKey(id);
    }

    @Override
    public List<Department> listAll() {
        return departmentMapper.selectAll();
    }

    @Override
    public void update(Department department) {
        departmentMapper.updateByPrimaryKey(department);

    }

    @Override
    public PageInfo<Department> query(QueryObject qo) {
/*
        int totalCount = departmentMapper.queryForCount(qo);
        if (totalCount == 0){
            return new PageResult<>(qo.getCurrentPage(), qo.getPageSize(),
                    totalCount, Collections.emptyList());
        }
        //获取总页数
        int totalPage = totalCount % qo.getPageSize()== 0 ?
                totalCount / qo.getPageSize() : totalCount / qo.getPageSize() +1;
        //判断当前页是否大于总页数
        if (qo.getCurrentPage() > totalPage){
            qo.setCurrentPage(totalPage);
        }*/

        //告诉插件要开始分页, 传入当前页, 每页显示数据
        PageHelper.startPage(qo.getCurrentPage(), qo.getPageSize());
        List<Department> departments = departmentMapper.queryForList(qo);
      /*  return new PageResult<>(qo.getCurrentPage(), qo.getPageSize(),
                totalCount, departments);*/
      return new PageInfo<>(departments);
    }
}
